# Flint Chart (MCP server)

> Flint Chart is an MCP server that adds tools to AI assistants such as Claude Desktop, Claude Code and Cursor. 🪄 Flint is a visualization language that lets AI agents reliably create expressive, good-looking charts from simple, human-editable chart specs. It has 4,343 GitHub stars, is released under the MIT license and runs locally with npx -y flint-chart-mcp.

Flint: A Visualization Language for the AI Era Flint is a visualization intermediate language that lets AI agents turn simple, human-editable chart specs into expressive, polished visualizations. Rather than requiring agents to hardcode verbose parameters for scales, axes, spacing, labels, and layout, Flint derives those decisions from a high-level semantic specification, the data, and an optional visual theme (e.g., New York Times, Economist, Swiss, and McKinsey).

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/microsoft/flint-chart |
| GitHub stars | 4,343 |
| License | MIT |
| Language | TypeScript |
| Transport | stdio |
| Packages | npm: flint-chart-mcp |
| Remote URL | none |
| Needs API key | no |
| Official | yes |
| Works with | Claude Desktop, Claude Code, Cursor, VS Code |
| Category | Other |
| Latest release | 0.5.1 (Aug 14, 2026) |
| Last commit | Sep 23, 2026 |

## Install

### Claude Desktop (claude_desktop_config.json)

```json
{
  "mcpServers": {
    "flint-chart": {
      "command": "npx",
      "args": [
        "-y",
        "flint-chart-mcp"
      ]
    }
  }
}
```

Settings > Developer > Edit Config. macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\. Restart Claude Desktop afterwards.

### Claude Code

```sh
claude mcp add --transport stdio flint-chart -- npx -y flint-chart-mcp
```

### Cursor (.cursor/mcp.json)

```json
{
  "mcpServers": {
    "flint-chart": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "flint-chart-mcp"
      ]
    }
  }
}
```

Project file; use ~/.cursor/mcp.json to enable it in every project.

### VS Code (.vscode/mcp.json)

```json
{
  "servers": {
    "flint-chart": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "flint-chart-mcp"
      ]
    }
  }
}
```

Config formats checked against the official docs on 2026-10-07.

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